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Updated: Jul 14, 2025

The Identification of Sea Lamprey Pheromones Using Bioassay-Guided Fractionation
Published on: July 17, 2018
Phylogenomic investigation of lampreys (Petromyzontiformes)
Brianna Smith1, Alexandra Walling1, Rachel Schwartz1
1Department of Biological Sciences, College of the Environment and Life Sciences, University of Rhode Island, 120 Flagg Road, Kingston, RI 02881, United States.
Abstract:
The history of lamprey evolution has been contentious due to limited morphological differentiation and limited genetic data. Available data has produced inconsistent results, including in the relationship among northern and southern species and the monophyly of putative clades. Here we use whole genome sequence data sourced from a public database to identify orthologs for 11 lamprey species from across the globe and build phylogenies. The phylogeny showed a clear separation between northern and southern lamprey species, which contrasts with some prior work. We also find that the phylogenetic relationships of our samples of two genera, Lethenteron and Eudontomyzon, deviate from the taxonomic classification of these species, suggesting that they require reclassification.
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